<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
  <audio preload autoplay loop id="vd">
    <source src="./source/music.mp3" type="audio/mpeg" />
  </audio>

  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <style>
      body {
        margin: 0;
        padding: 0;
        overflow: hidden;
      }

      .city {
        width: 100%;
        position: fixed;
        bottom: 0px;
        z-index: 100;
      }

      .city img {
        width: 100%;
      }
    </style>
    <title>play</title>
  </head>

  <body onselectstart="return false">
    <canvas id="cas" style="background-color: rgba(0, 5, 24, 1)"
      >浏览器不支持canvas</canvas
    >
    <div class="city"><img src="./source/ity.png" alt="" /></div>
    <img src="./source/moon.png" alt="" id="moon" style="visibility: hidden" />
    <div id="customWord" style="display: none"></div>
    <div id="customWord2" style="display: none"></div>
    <div style="display: none">
      <div class="shape3">*ଘ(੭*ˊᵕˋ)੭* ੈ✩‧₊˚</div>
    </div>
    <script type="text/javascript">
      window.onload = function () {
        setInterval("toggleSound()", 100);
      };

      function toggleSound() {
        var music = document.getElementById("vd"); //获取ID

        if (music.paused) {
          //判读是否播放
          music.paused = false;
          music.play(); //没有就播放
        }
      }
    </script>
    <script>
      function getQueryVariable(variable) {
        var query = window.location.search.substring(1);
        var vars = query.split("&");
        for (var i = 0; i < vars.length; i++) {
          var pair = vars[i].split("=");
          if (pair[0] == variable) {
            return pair[1];
          }
        }
        return "";
      }

      v1 = decodeURI(getQueryVariable("v1"));
      v1 = "新年快乐";
      var html1 = '<div class="shape2">' + v1 + "</div>";

      v2 = decodeURI(getQueryVariable("v2"));
      v2 = "虎虎生威 为虎添翼";
      var html2 = '<div class="shape2">' + v2 + "</div>";

      v3 = decodeURI(getQueryVariable("v3"));
      v3 = "May, Happy Chinese New Year！";
      var html3 = '<div class="shape">' + v3 + "</div>";

      v4 = decodeURI(getQueryVariable("v4"));
      v4 = "除夕快乐 新年安康";
      var html4 = '<div class="shape">' + v4 + "</div>";

      v5 = decodeURI(getQueryVariable("v5"));
      v5 = "学业进步 万事胜意";
      var html5 = '<div class="shape">' + v5 + "</div>";

      var title = decodeURI(getQueryVariable("title"));
      title = "For May";

      document.getElementsByTagName("title")[0].innerText = title;
      document.getElementById("customWord2").innerHTML = html1 + html2;
      document.getElementById("customWord").innerHTML = html3 + html4 + html5;
    </script>
    <script>
      var canvas = document.getElementById("cas");
      var ocas = document.createElement("canvas");
      var octx = ocas.getContext("2d");
      var ctx = canvas.getContext("2d");
      ocas.width = canvas.width = window.innerWidth;
      ocas.height = canvas.height = window.innerHeight;
      var bigbooms = [];

      window.onload = function () {
        initAnimate();
      };

      function initAnimate() {
        drawBg();

        lastTime = new Date();
        index = 0;
        animate();
      }

      var lastTime;
      var index = 0;

      function animate() {
        ctx.save();
        ctx.fillStyle = "rgba(0,5,24,0.1)";
        ctx.fillRect(0, 0, canvas.width, canvas.height);
        ctx.restore();

        var newTime = new Date();
        if (newTime - lastTime > 1000 && index < 5) {
          var bigboom = new Boom(
            canvas.width / 2,
            2,
            "#FFF",
            {
              x: canvas.width / 2,
              y: 200,
            },
            document.querySelectorAll(".shape2")[index]
          );
          bigbooms.push(bigboom);
          lastTime = newTime;
          index++;
        } else if (newTime - lastTime > 1000 && index < 8) {
          lastTime = newTime;
          index++;
        } else if (
          newTime - lastTime > 400 + (window.innerHeight - 767) / 2 &&
          index >= 8 &&
          index < 52
        ) {
          var random = Math.random() * 100 > 10 ? true : false;
          var x = getRandom(canvas.width / 5, (canvas.width * 4) / 5);
          var y = getRandom(50, 200);
          if (index % 9 != 0) {
            var bigboom = new Boom(
              getRandom(canvas.width / 3, (canvas.width * 2) / 3),
              2,
              "#FFF",
              {
                x: x,
                y: y,
              }
            );
            bigbooms.push(bigboom);
          } else {
            var bigboom = new Boom(
              getRandom(canvas.width / 3, (canvas.width * 2) / 3),
              2,
              "#FFF",
              {
                x: canvas.width / 2,
                y: 200,
              },
              document.querySelectorAll(".shape")[
                parseInt(
                  getRandom(0, document.querySelectorAll(".shape").length)
                )
              ]
            );
            bigbooms.push(bigboom);
          }
          lastTime = newTime;
          index++;
          console.log(bigbooms);
        } else if (
          newTime - lastTime > 400 + (window.innerHeight - 767) / 2 &&
          index == 52
        ) {
          var random = Math.random() * 100 > 10 ? true : false;
          var x = getRandom(canvas.width / 5, (canvas.width * 4) / 5);
          var y = getRandom(50, 200);

          var bigboom = new Boom(
            getRandom(canvas.width / 3, (canvas.width * 2) / 3),
            2,
            "#FFF",
            {
              x: canvas.width / 2,
              y: 200,
            },
            document.querySelectorAll(".shape3")[
              parseInt(
                getRandom(0, document.querySelectorAll(".shape3").length)
              )
            ]
          );
          bigbooms.push(bigboom);

          lastTime = newTime;
          index++;
          console.log(bigbooms);
        }
        stars.foreach(function () {
          this.paint();
        });

        drawMoon();

        bigbooms.foreach(function (index) {
          var that = this;
          if (!this.dead) {
            this._move();
            this._drawLight();
          } else {
            this.booms.foreach(function (index) {
              if (!this.dead) {
                this.moveTo(index);
              } else if (index === that.booms.length - 1) {
                bigbooms[bigbooms.indexOf(that)] = null;
              }
            });
          }
        });

        raf(animate);
      }

      function drawMoon() {
        var moon = document.getElementById("moon");
        var centerX = canvas.width - 200,
          centerY = 100,
          width = 80;
        if (moon.complete) {
          ctx.drawImage(moon, centerX, centerY, width, width);
        } else {
          moon.onload = function () {
            ctx.drawImage(moon, centerX, centerY, width, width);
          };
        }
        var index = 0;
        for (var i = 0; i < 10; i++) {
          ctx.save();
          ctx.beginPath();
          ctx.arc(
            centerX + width / 2,
            centerY + width / 2,
            width / 2 + index,
            0,
            2 * Math.PI
          );
          ctx.fillStyle = "rgba(240,219,120,0.005)";
          index += 2;
          ctx.fill();
          ctx.restore();
        }
      }

      Array.prototype.foreach = function (callback) {
        for (var i = 0; i < this.length; i++) {
          if (this[i] !== null) callback.apply(this[i], [i]);
        }
      };

      var raf =
        window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function (callback) {
          window.setTimeout(callback, 1000 / 60);
        };

      canvas.onclick = function () {
        var x = event.clientX;
        var y = event.clientY;
        var bigboom = new Boom(
          getRandom(canvas.width / 3, (canvas.width * 2) / 3),
          2,
          "#FFF",
          {
            x: x,
            y: y,
          }
        );
        bigbooms.push(bigboom);
      };

      // canvas.addEventLisener("touchstart" , function(event){
      // 	var touch = event.targetTouches[0];
      // 	var x = event.pageX;
      // 	var y = event.pageY;
      // 	var bigboom = new Boom(getRandom(canvas.width/3,canvas.width*2/3) ,2,"#FFF" , {x:x , y:y});
      // 	bigbooms.push(bigboom)
      // })

      var Boom = function (x, r, c, boomArea, shape) {
        this.booms = [];
        this.x = x;
        this.y = canvas.height + r;
        this.r = r;
        this.c = c;
        this.shape = shape || false;
        this.boomArea = boomArea;
        this.theta = 0;
        this.dead = false;
        this.ba = 100;
      };
      Boom.prototype = {
        _paint: function () {
          ctx.save();
          ctx.beginPath();
          ctx.arc(this.x, this.y, this.r, 0, 2 * Math.PI);
          ctx.fillStyle = this.c;
          ctx.fill();
          ctx.restore();
        },
        _move: function () {
          var dx = this.boomArea.x - this.x,
            dy = this.boomArea.y - this.y;
          this.x = this.x + dx * 0.01;
          this.y = this.y + dy * 0.01;

          if (Math.abs(dx) <= this.ba && Math.abs(dy) <= this.ba) {
            if (this.shape) {
              this._shapBoom();
            } else this._boom();
            this.dead = true;
          } else {
            this._paint();
          }
        },
        _drawLight: function () {
          ctx.save();
          ctx.fillStyle = "rgba(255,228,150,0.3)";
          ctx.beginPath();
          ctx.arc(
            this.x,
            this.y,
            this.r + 3 * Math.random() + 1,
            0,
            2 * Math.PI
          );
          ctx.fill();
          ctx.restore();
        },
        _boom: function () {
          var fragNum = getRandom(30, 200);
          var style = getRandom(0, 10) >= 5 ? 1 : 2;
          var color;
          if (style === 1) {
            color = {
              a: parseInt(getRandom(128, 255)),
              b: parseInt(getRandom(128, 255)),
              c: parseInt(getRandom(128, 255)),
            };
          }

          var fanwei = parseInt(getRandom(300, 400));
          for (var i = 0; i < fragNum; i++) {
            if (style === 2) {
              color = {
                a: parseInt(getRandom(128, 255)),
                b: parseInt(getRandom(128, 255)),
                c: parseInt(getRandom(128, 255)),
              };
            }
            var a = getRandom(-Math.PI, Math.PI);
            var x = getRandom(0, fanwei) * Math.cos(a) + this.x;
            var y = getRandom(0, fanwei) * Math.sin(a) + this.y;
            var radius = getRandom(0, 2);
            var frag = new Frag(this.x, this.y, radius, color, x, y);
            this.booms.push(frag);
          }
        },
        _shapBoom: function () {
          var that = this;
          putValue(ocas, octx, this.shape, 5, function (dots) {
            var dx = canvas.width / 2 - that.x;
            var dy = canvas.height / 2 - that.y;
            for (var i = 0; i < dots.length; i++) {
              color = {
                a: dots[i].a,
                b: dots[i].b,
                c: dots[i].c,
              };
              var x = dots[i].x;
              var y = dots[i].y;
              var radius = 1;
              var frag = new Frag(
                that.x,
                that.y,
                radius,
                color,
                x - dx,
                y - dy
              );
              that.booms.push(frag);
            }
          });
        },
      };

      function putValue(canvas, context, ele, dr, callback) {
        context.clearRect(0, 0, canvas.width, canvas.height);
        var img = new Image();
        if (ele.innerHTML.indexOf("img") >= 0) {
          img.src = ele.getElementsByTagName("img")[0].src;
          imgload(img, function () {
            context.drawImage(
              img,
              canvas.width / 2 - img.width / 2,
              canvas.height / 2 - img.width / 2
            );
            dots = getimgData(canvas, context, dr);
            callback(dots);
          });
        } else {
          var text = ele.innerHTML;
          context.save();
          var fontSize = 200;
          if (index > 7) fontSize = 100;
          context.font = fontSize + "px 宋体 bold";
          context.textAlign = "center";
          context.textBaseline = "middle";
          context.fillStyle =
            "rgba(" +
            parseInt(getRandom(128, 255)) +
            "," +
            parseInt(getRandom(128, 255)) +
            "," +
            parseInt(getRandom(128, 255)) +
            " , 1)";
          context.fillText(text, canvas.width / 2, canvas.height / 2);
          context.restore();
          dots = getimgData(canvas, context, dr);
          callback(dots);
        }
      }

      function imgload(img, callback) {
        if (img.complete) {
          callback.call(img);
        } else {
          img.onload = function () {
            callback.call(this);
          };
        }
      }

      function getimgData(canvas, context, dr) {
        var imgData = context.getImageData(0, 0, canvas.width, canvas.height);
        context.clearRect(0, 0, canvas.width, canvas.height);
        var dots = [];
        for (var x = 0; x < imgData.width; x += dr) {
          for (var y = 0; y < imgData.height; y += dr) {
            var i = (y * imgData.width + x) * 4;
            if (imgData.data[i + 3] > 128) {
              var dot = {
                x: x,
                y: y,
                a: imgData.data[i],
                b: imgData.data[i + 1],
                c: imgData.data[i + 2],
              };
              dots.push(dot);
            }
          }
        }
        return dots;
      }

      function getRandom(a, b) {
        return Math.random() * (b - a) + a;
      }

      var maxRadius = 1,
        stars = [];

      function drawBg() {
        for (var i = 0; i < 500; i++) {
          var r = Math.random() * maxRadius;
          var x = Math.random() * canvas.width;
          var y = Math.random() * 2 * canvas.height - canvas.height;
          var star = new Star(x, y, r);
          stars.push(star);
          star.paint();
        }
      }

      var Star = function (x, y, r) {
        this.x = x;
        this.y = y;
        this.r = r;
      };
      Star.prototype = {
        paint: function () {
          ctx.save();
          ctx.beginPath();
          ctx.arc(this.x, this.y, this.r, 0, 2 * Math.PI);
          ctx.fillStyle = "rgba(255,255,255," + this.r + ")";
          ctx.fill();
          ctx.restore();
        },
      };

      var focallength = 250;
      var Frag = function (centerX, centerY, radius, color, tx, ty) {
        this.tx = tx;
        this.ty = ty;
        this.x = centerX;
        this.y = centerY;
        this.dead = false;
        this.centerX = centerX;
        this.centerY = centerY;
        this.radius = radius;
        this.color = color;
      };

      Frag.prototype = {
        paint: function () {
          ctx.save();
          ctx.beginPath();
          ctx.arc(this.x, this.y, this.radius, 0, 2 * Math.PI);
          ctx.fillStyle =
            "rgba(" +
            this.color.a +
            "," +
            this.color.b +
            "," +
            this.color.c +
            ",1)";
          ctx.fill();
          ctx.restore();
        },
        moveTo: function (index) {
          this.ty = this.ty + 0.3;
          var dx = this.tx - this.x,
            dy = this.ty - this.y;
          this.x = Math.abs(dx) < 0.1 ? this.tx : this.x + dx * 0.1;
          this.y = Math.abs(dy) < 0.1 ? this.ty : this.y + dy * 0.1;
          if (dx === 0 && Math.abs(dy) <= 80) {
            this.dead = true;
          }
          this.paint();
        },
      };
    </script>
    <script>
      var _hmt = _hmt || [];
      (function () {
        var hm = document.createElement("script");
        hm.src = "https://hm.baidu.com/hm.js?26acc47a8b0054a25644dfaec6fdecd2";
        var s = document.getElementsByTagName("script")[0];
        s.parentNode.insertBefore(hm, s);
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    </script>
  </body>
</html>
